Wall-plug.



No. 889,700. PATLNTLD JUNE 2, 1908. 0. LOVELY.

WALL PLUG.

APPLIGATION FILED MAY 13, 1907.

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UNTTE fl sTATns PATENT onirica.

CYRIL LOVELY, OF WEBSTER, MASSACHUSETTS, ASSIGNOR TO VICTOR D. PAPINEAU,OF

. WEBSTER, MASSACHUSETTS.

WALL-PLUG.

in the county of Worcester and State of Massachusetts, have invented anew and useful Wall-Plug, of which the following is a specification. A y

Various kinds of Wall plugs have been proposed, some of which areprovided with corrugations and `others with lips for engaging the naildriven into the plug, but so far as I am aware, they have not beenvprovided with `lips leaving perforationsin the wall plug other is toopen to the plaster or cement sc that the lztter may enter and help holdthe plugin ace. p One object of the present invention is to provide sucha construction as this and anrovide a construction in which a Wire orthe like may be removably held in the plug to locate it, this wireextending out from the plaster soA that there may be no time lost inmeasuring for the lplugs after they are in position. These wires beingof smaller size than the nail to be used, when the nailI is driven in,the tongues holding it will be forced .back and permit the wire to bewithdrawn.

Another object of the invention is to increas`ethe strength of theentire structure and tli'us permit the plug to be made of thinner metalif desired, thereby saving in the expense of the device.` This is doneby providing a series of opposite, inwardly-extending lips or ribs atanangle to the surface ofthe plug, continuous from one side of the plug tothe other, and connecting the o posite edges thereof so as to resist anyorce tending to push the sides of the plug outwardly. i

Another object of the invention is to construct a wall plug in a simpleand inexpensive manner so that it will be manufactured and sold cheaplywithout losing any .of the advantages thereof. v

Reference is to be had to the accompanying drawings which show apreferred form of the invention and in which,

Figure 1 is a sectional view of a portion of a wall showing the plugtherein with the locking wire in position. Fig. 2 is a similar viewshowing the'same plug when the nail is driven in and the wire Withdrawn.Fig. 3 is a side elevation of the yplug. Fig. 4 is an odge elevation,and Fig. 5 is a plan.

Specification of Letters Patent.

Application filed May 13, 1907. Serial No. 373,333.

Patented June 2, 1908.

The plug is preferably formed of a single piece of sheet metal struck upand stamped by means of dies or the like in a Well known manner.

The sides of the plug are provided with corrugations a which havetroughs b extending substantially all 'the way across'the plug andtransversely thereof. The troughs are stamped out before the sheet metalis bent up to shape to form the complete lug so as to produce inwardlyextending resi ient lips c. These lips are bent in at an angle and arelocated opposite each other. In the plug las formed, they aresubstantially in contact so that the wire d may be forced into the plugand will project therefrom as indicated in Fig. l through the plaster eto show where the lug is located. It will be seen also that at the otherside of each trough b is another lip k. These lips k are shorter thanthe lips c and extend at an angle more nearly perpendicular to the sidesof theplug than the lips c. However, they are continuous from one sideto the other and they constitute reinforcing ribs extending across theplug which strengthen the device materially.

`When a nail f is driven into' the plug it4 'spreads thehlipssufficiently to permit the hold the same inposition.

It will be seen that the tongues are of such length that they arelocated at an acute angle so that the driving in of the nails simplyforces their ends outwardly without having any great tendency to forceout the outer surfaces of the Wall plug itself. This er! mits the lipsto bear resiliently on the nail so as to hold 1t securely in position.By having single lips extending all the way across the nail lug, thedevice is greatly simplified, and t ie nail or Wire can be held at anyother point than the center, if it is desired. Moreoverhthese li s,extending as they do, entirely across t e surface of the Wall-plug andbeing located in the troughs of the corrugations, one set being longerthan the other and inclined in the direction in which the nail is to bedriven into the plug, and the other set be- .ing shorter and at a lessacute angle to the surface of the plug and both sets being continuous,greatly strengthen the structure. The device has been found in practiceto be so greatly strengthened by theselips and the lips 7c that the plugcan be made of comparatively thin stock thus saving greatly in theamount of metal used. Even when made of thin stock in this way, the plughas been found by actual tests to be very strong, and toefliciently'hold the nail. This latter feature -is due in part to theincreased strength and in part.to the fact that the sharp cut edges ofthe lips c are brought into contact with the nail at an angle.

While I have illustrated and described a particular form of theinvention, I am aware that many modifications may be made therein by anyersons skilled in the art without departing from the scope of theinvention as expressed in the claims. Therefore, I do not wish to belimited to the particular form shown, but

What I do claim is :--v

1. The combination with a walllug having resilient sides, of a small healess wire extending from the outer face thereofI and held in osition Ybysaid resilient sides of the plug to lndicate the position of the plugwhen 1n the wall.

2. A wall plug having transversely corrugated sides, and corrugationshaving t'wo sets of inwardly projecting lips extending entirely acrossthe surface of the wall-plug and located in the troughs of thecorrugations, one set being longer than the other and inclined in thedirection in which the nail is to be driven into the plug, and the otherset being shorter and at a less acute angle to the Asurface of the plug,in combination with a small wire adapted to be removably held by saidlonger lips and to be released therefrom when a nail is driven betweensaid li s.

3. A wall lug having transverse y corrugated sides, t e corrugationshaving two sets of inwardly projecting lips extending entirely acrossthesurface of the wall plug and located in the troughs of thecorrugations,- one set being longer than the other and inclined -sui aceof the wall-plug, one set being longer than the other and inclined inthe direction in which the nail is to be driven into the plug, and theother set being shorter and at a less acute angle to the surface of theplug, whereby both sets of lips strengthen the plug.

5. A wall plug formed-of resilient material having continuousinwardly-extending, oppositely-disposed lips on the inner surfacesthereof, each extending substantially across the same at an angle to thesurfaces of the plug and connecting the opposite edges thereof, wherebysaid lips serve as ribs to strengthen the plug by tending to resist anyforce from within which would tend to push the walls of the plugoutwardly.'

6. A wall plug formed of resilient material having 'continuousinwardly-extending, oppositelyedisposed lips on the inner surfacethereof, each extending substantially across the same at an angle to thesurfaces of the plug and connecting the opposite edges thereof, wherebysaid lips serve as ribs to strengthen the plug by tending to resist anyforce from within which would tend to push the walls of the plugoutwardly, said lips extending in proximity to each other at the centerof the plug and having sharp cut edges at an angle for engaging andresiliently holding a nail or the like.

In testimony whereof I have hereunto set my hand, in the presence of twosubscribing witnesses.

CYRII; LOVELY. Witnesses:

CHAs. K. KNowL'roN, EDWIN F. DAVIs.

